{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "adverse event", "arguments": ["Subject.Gender", "Subject.Age", "Subject.Race", "Subject.Disorder", "Treatment.Disorder", "Treatment.Time_elapsed", "Subject.Population", "Effect", "Treatment.Route", "Treatment.Drug", "Treatment.Freq", "Subject", "Combination.Drug", "Treatment.Duration"]}], "input": "Though serotonin syndrome is most often associated with ingestion of more than one serotonergic drug, many other mechanisms have been associated with serotonergic excess."}
{"adverse event": [{"Subject.Gender": "NAN", "Subject.Age": "NAN", "Subject.Race": "NAN", "Subject.Disorder": "NAN", "Treatment.Disorder": "NAN", "Treatment.Time_elapsed": "NAN", "Subject.Population": "NAN", "Effect": "serotonin syndrome", "Treatment.Route": "NAN", "Treatment.Drug": "serotonergic drug", "Treatment.Freq": "NAN", "Subject": "NAN", "Combination.Drug": "NAN", "Treatment.Duration": "NAN"}]}